Rockingham in December
December in Rockingham is peak summer, and the weather reflects it. You're looking at average daily highs of 27.9 degrees.
Daytime highs average 27.9 degrees, dropping to 18.2 degrees overnight. That's a 10-degree swing between day and night. Comfortable during the day, with evenings that invite a light layer.
December is 4.1 degrees warmer than the yearly average here.
Rainfall in December averages 6mm over about 3 days. That means roughly a 10% chance of rain on any given day, so you can leave the umbrella at the hotel.
Sunshine-wise, December delivers around 29.4 MJ/m2 of daily solar radiation. UV sits in the extreme category. Sunscreen, hat, and sunnies are all essential. You can burn in under 10 minutes.
December earns a 8.6/10 on our Comfort Score. This is prime time.
Packing tip: bring a mix of short and long sleeves, and serious sun protection.
The full data breakdown is below. You can also see how other Australian cities compare in December.
December at a Glance
Temperature Range
Daily temperature range in December. The bar shows the typical spread between overnight lows and afternoon highs.
What to Pack
- Comfortable casual wear suitable for warm days
- Strong sun protection including a hat and SPF 50+
Coming From Overseas?
How December in Rockingham stacks up against major cities around the world.
About 20 degrees warmer and considerably drier.
About 22 degrees warmer and considerably drier.
About 16 degrees warmer and considerably drier.
How December Compares
Rockingham's monthly climate at a glance. December is highlighted.
| Month | Max | Min | Rain | Comfort |
|---|---|---|---|---|
| Jan | 29.0 | 19.1 | 1mm | 8.0 |
| Feb | 31.6 | 20.4 | 10mm | 6.0 |
| Mar | 28.4 | 17.3 | 31mm | 8.0 |
| Apr | 26.8 | 15.8 | 33mm | 8.7 |
| May | 23.5 | 14.9 | 90mm | 8.8 |
| Jun | 18.5 | 12.1 | 108mm | 4.6 |
| Jul | 17.8 | 11.6 | 197mm | 3.4 |
| Aug | 17.9 | 12.9 | 142mm | 4.1 |
| Sep | 19.7 | 11.1 | 32mm | 7.6 |
| Oct | 21.2 | 13.3 | 47mm | 8.8 |
| Nov | 23.8 | 14.8 | 20mm | 10.0 |
| Dec | 27.9 | 18.2 | 6mm | 8.6 |